iSCSI

This section describes how to create a storage backend of the iSCSI protocol type.

Configuration Item Description

Table 1 backend parameters

Parameter	Description	Mandatory	Default Value	Remarks
storage	Storage service type.	Yes	-	The value is fixed to fusionstorage-san.
name	Storage backend name. The value can contain a maximum of 63 characters, including lowercase letters, digits, and hyphens (-). It must start with a letter or digit.	Yes	-	Ensure that the storage backend name is unique.
namespace	Namespace.	No	huawei-csi	The storage backend must be in the same namespace as Huawei CSI.
urls	Management URLs of storage device. The value format is a list.	Yes	-	The value can be a domain name or an IP address + port number.
pools	Storage pools of storage devices. The value format is a list.	Yes	-	Enter the storage pool names.
parameters.protocol	Storage protocol. The value is a character string.	Yes	-	The value is fixed to iscsi. Ensure that an iSCSI client has been installed on the connected compute node.
parameters.portals	Service access port. Nodes will use this port to read and write storage resources. The value format is a list.	Conditionally mandatory	-	Multiple ports can be configured. Either iscsiLinks or portals must be set.
parameters.iscsiLinks	Number of dynamic access links. This parameter is supported only in OceanStor Pacific 8.1.5 and later versions.	Conditionally mandatory		Either iscsiLinks or portals must be set. NOTE: The iscsiLinks parameter takes effect only when the portals parameter is left empty. The number of valid links is the maximum value among the following three values: Value of iscsiLinks Minimum number of links dynamically allocated by the storage Number of established links on the host
supportedTopologies	Storage topology awareness configuration. The parameter format is JSON of the list type.	No	-	This parameter is mandatory if storage topology awareness is enabled. For details, see Configuring Storage Topology Awareness.
maxClientThreads	Maximum number of concurrent connections to a storage backend.	No	30	The value ranges from 1 to 30. If this parameter is not set or the value is not in the specified range, the default value 30 is used.

Creating a Storage Backend

Prepare a backend configuration file, for example, backend.yaml.

storage: "fusionstorage-san"
name: "backend-demo"
namespace: "huawei-csi"
urls:
  - "https://192.168.129.157:8088"
pools:
  - "StoragePool001"
parameters:
  protocol: "iscsi"
  portals:
    - "10.10.30.20"
    - "10.10.30.21"
maxClientThreads: "30"

Run the following command to create a storage backend.

oceanctl create backend -f /path/to/backend.yaml -i yaml

The following is an example of the command output.

NUMBER  CONFIGURED    NAME           STORAGE              URLS                
1       false         backend-demo   fusionstorage-san    https://192.168.129.157:8088 
Please enter the backend number to configure (Enter 'exit' to exit):

Enter the serial number of the backend to be created and enter the account and password.

Please enter the backend number to configure (Enter 'exit' to exit):1
Please enter this backend user name: admin
Please enter this backend password:

Backend backend-demo is configured
NUMBER  CONFIGURED    NAME            STORAGE              URLS               
1       true          backend-demo    fusionstorage-san    https://192.168.129.157:8088 
Please enter the backend number to configure (Enter 'exit' to exit):

Check the storage backend creation result.

oceanctl get backend

The following is an example of the command output. If the backend status is Bound, the creation is successful.

NAMESPACE     NAME            PROTOCOL    STORAGETYPE        SN       STATUS  ONLINE  URL                 
huawei-csi    backend-demo    iscsi       fusionstorage-san           Bound   true    https://192.168.129.157:8088